JavaScript DataCopy

DataCopy.js

// Extend copy
function extendCopy(o) {
  let c = {};

  for (let i in o) {
    c[i] = o[i];
  }

  c.uber = o;
  return c;
}

// Deep copy
function deepCopy(o) {
  let c = arguments[1] || {};

  for (let i in o) {
    if (typeof o[i] === 'object') {
      c[i] = o[i] instanceof Array
        ? []
        : {};
      deepCopy(o[i], c[i])
    } else {
      c[i] = o[i];
    }
  }

  return c;
}

// Easy deep copy(Can't handle function)
function deepCopyEasy(o) {
  return typeof o === 'object'
    ? JSON.parse(JSON.stringify(o))
    : o;
}